#331 Carrera sunglasses are famous for not only their history but their patented, Optyl material, a heat-hardened plastic weighing 20% less than acetate. This material results in a reduction of allergic reactions and improved fit through a memory effect that provided permanent elasticity and dimensional stability. This model takes a bold design approach to the classic aviator with top inner-cut away detail. Crafted from a mix of acetate & metal, this frame focuses on cool geometric lines & thoughtful details. The double nose bridge with the suspended "C" logo & the silver toned Flag temples for a precious finishing touch. Frame Color & Material: Acetate & Metal - Matte Black/Silver-Tone. Lens Color is Gray Blue & has 100% UV protection! Measurements: Lens 59mm - Bridge 16mm - Temple 135mm. All offers are accepted or countered & questions are welcome. No low ball offers please! Thanks for visiting my closet.